Put Up Or Shut Up

An owner-built '66 Mustang Pro Touring car takes on a brand-new Porsche 911 Turbo S driven by pro driver Randy Pobst. It's a road-racing battle between brilliant home ingenuity and the best technology a legendary company produces.

Two of the top modified pulling tractors in the US compete in the ultimate drag race. Randy Davis, Keith Wayson and their 6,000hp beasts will race to the finish line in a contest of speed and strength.

Two insanely powerful drag-racing motorcycles swap their drag slicks for mud tires, then face off in a 500-foot heads-up drag race.

Two wheels battle four as Jeremy Teasley rides a no-wheelie bar Pro Street bike against the Drag Week-winning Sick Seconds Camaro driven by Tom Bailey. It's 1,300cc vs. 615ci to see who will rule the quarter mile.

Four up-and-coming racers from Southern California compete in identical go-karts. The setting for the race is Riverside's historic Adams Motorsports Park, the oldest operating karting facility in the world.

It's Chevy vs. Ford, big block vs. small and turbo vs. nitrous when longtime associates Anthony "Big Worm" Smith and Artis Houston face off in a classic Southern California grudge race.